The side effects of lexapro (escitalopram) are safe right? I'm not in any danger? Is it okay to take. 5 mg of ativan while on it? My head has funny pressure it sucks

Generally, yes. Lexapro (escitalopram) often has early side effects which should disappear over the next few weeks. If any of the symptoms you are feeling in your head become severe, call your doc. The Ativan .5mg is fine, assuming that your doc prescribed it and knows that you are taking it.